Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2018 9 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/11/2018   08:26:51   (   0.36,-104.17) (   0.55,-104.91)   84.63                80
 09/12/2018   08:05:27   (   0.36,-104.16) (  -0.50,-100.39)  429.81                80
 09/13/2018   20:27:24   (  -0.35,-104.25) (  -0.66,-105.70)  164.44                80
 09/14/2018   20:11:20   (  -0.36,-104.25) (   0.33,-101.16)  351.51                80
 09/16/2018   08:33:08   (   0.34,-104.14) (   0.87,-106.43)  261.64                80
 09/17/2018   08:11:44   (   0.35,-104.12) (  -0.12,-101.89)  252.74                80
 09/18/2018   20:33:41   (  -0.33,-104.19) (  -1.04,-107.20)  344.42                80
 09/19/2018   20:17:38   (  -0.33,-104.18) (   0.02,-102.68)  171.58                80
 09/21/2018   08:39:26   (   0.32,-104.10) (   1.19,-107.95)  438.77                80
 09/22/2018   08:18:01   (   0.32,-104.08) (   0.19,-103.41)   75.75                80
 09/24/2018   20:21:14   (  -0.31,-104.13) (  -0.35,-104.19)    7.96                80